Reversible tuning of lattice strain in epitaxial SrTiO3/La0.7Sr0.3MnO3 thin films by converse piezoelectric effect of 0.72Pb(Mg1/3Nb2/3)O3-0.28 PbTiO3 substrate

被引：14

作者：

Levin, A. A. ^{[1
]}

Pommrich, A. I. ^{[1
]}

Weissbach, T. ^{[1
]}

Meyer, D. C. ^{[1
]}

Bilani-Zeneli, O. ^{[2
]}

机构：

[1] Tech Univ Dresden, Inst Strukturphys, D-01062 Dresden, Germany

[2] IFW Dresden, Inst Met Mat, D-01171 Dresden, Germany

来源：

JOURNAL OF APPLIED PHYSICS | 2008年 / 103卷 / 05期

关键词：

D O I：

10.1063/1.2838216

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Thin SrTiO3/La0.7Sr0.3MnO3 (STO/LSMO) films of 30 nm thickness were epitaxially grown on a (001) Pb(Mg1/3Nb2/3)O-3-28 mol % PbTiO3 piezoelectric single-crystalline plate and investigated by means of wide-angle x-ray scattering in situ under the influence of a direct current electric field with strength E up to +/- 18 kV/cm. The strain s in the films could by tuned dynamically due to a dominant converse piezoelectric effect of the substrate. The coefficient of coupling between electric field-induced strain alteration of the substrate and the buffer film (LSMO) is approximately 0.75, whereas for the substrate and top films (STO) it is about 0.35 related to a normalized strain alteration of the substrate of 1. (c) 2008 American Institute of Physics.

引用

页数：5

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